HERBACOFF ORAL SOLUTION

Indications

• Constipation
• Bowel cleansing

Dosage

Children: Child 1–11 months: 1 g as required, Child 1–11 years: 2 g as required, Child 12–17 years: 4 g as required.

Adults: 4 g as required, usually administered rectally.

Mechanism of action

When administered rectally, glycerol exerts a hygroscopic and/or local irritant action, drawing water from the tissues into the feces and reflexively stimulating evacuation. It decreases intraocular pressure by creating an osmotic gradient between the blood and intraocular fluid, causing fluid to move from the aqueous and vitreous humors into the bloodstream. Glycerol is classified as a hyperosmotic laxative and may also have lubricating and fecal softening effects.

Pharmacodynamics

Glycerol is commonly classified as an osmotic laxative, acting through its local irritant effects and possibly having lubricating and fecal softening actions. Glycerol suppositories usually produce effects within 15 to 30 minutes, providing quick relief from constipation.

Pharmacokinetics

Glycerol is rapidly absorbed through the gastrointestinal tract. It is metabolized in the liver and other tissues, with a half-life that varies depending on the route of administration. Following rectal administration, glycerol is primarily excreted in urine. The pharmacokinetics may vary based on dosage forms and individual patient factors.

Contra-indications

• Acute abdominal conditions
• Acute inflammatory bowel disease
• Intestinal obstruction
• Severe dehydration

Adverse effects

• Abdominal cramps
• Asthenia
• Gastrointestinal disorders
• Hypermagnesaemia
• Skin reactions
• Urine discolouration

Precautions

• Avoid prolonged contact with skin, especially in incontinent patients or infants wearing nappies due to the risk of irritation and excoriation.
• Excessive use may cause diarrhea and related effects such as hypokalaemia.

Pregnancy

Manufacturers advise avoidance due to limited information available.

Breast-feeding

Manufacturers advise avoidance as there is no information available.

Storage

Store at room temperature, away from direct sunlight.

Formulations

• Glycerol 1g suppositories
• Glycerol 2g suppositories
• Glycerol 4g suppositories
• Glycerol oral suspension

Indications

• Cough
• Bronchitis
• Asthma
• Respiratory tract infections
• Inflammatory conditions

Dosage

Children: Refer to established guidelines or consult a healthcare professional for appropriate dosing.

Adults: Refer to established guidelines or consult a healthcare professional for appropriate dosing.

Mechanism of action

The primary active components of Adhatoda, particularly vasicine and vasicinone, exhibit bronchodilator effects by relaxing the bronchial smooth muscles. They also act as mucolytics, facilitating the clearance of mucus from the respiratory tract. Furthermore, these compounds have been shown to exert anti-inflammatory effects by inhibiting the release of pro-inflammatory cytokines and mediators. This multi-faceted mechanism makes Adhatoda effective in alleviating symptoms associated with respiratory ailments.

Pharmacodynamics

Adhatoda demonstrates a range of pharmacodynamic effects, including bronchodilation, mucus secretion modulation, and anti-inflammatory action. The alkaloids enhance ciliary action in the respiratory tract, improving mucus clearance. The anti-inflammatory properties reduce airway inflammation, which is beneficial in conditions such as asthma and chronic bronchitis. Additionally, the antimicrobial activity of Adhatoda may help in preventing secondary infections in respiratory diseases.

Pharmacokinetics

The pharmacokinetics of Adhatoda have not been extensively studied. However, it is known that the active compounds are absorbed after oral administration, with effects typically observed within hours. The metabolic pathways of vasicine and other alkaloids involve hepatic metabolism, and they are likely excreted in urine. The bioavailability and half-life of these compounds require further investigation to establish precise pharmacokinetic profiles.

Adverse effects

• Nausea
• Vomiting
• Diarrhea
• Dizziness
• Headache
• Skin rash

Interactions

• May interact with anticoagulants, increasing the risk of bleeding
• Potential interaction with antihypertensive medications

Precautions

• Use with caution in patients with a history of gastrointestinal disorders
• Should be used cautiously in patients with liver disease
• Monitor for potential allergic reactions

Pregnancy

Ahdatoda should be used cautiously during pregnancy. Consultation with a healthcare provider is recommended.

Breast-feeding

Safety during breastfeeding has not been established; consult a healthcare provider.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Formulations

• Dried leaves
• Powdered form
• Extracts

Indications

• Skin burns and wounds
• Sunburn
• Acne
• Psoriasis
• Digestive disorders
• Constipation

Dosage

Children: For topical use, apply Aloe vera gel as needed on the affected area. For oral formulations, consult product-specific dosing recommendations tailored to children's needs.

Adults: For topical use, apply Aloe vera gel directly to the affected area as needed. For oral consumption, refer to specific product guidelines, as formulations vary widely.

Mechanism of action

The primary mechanism of action of Aloe vera involves its anti-inflammatory and immunomodulatory properties. The polysaccharides, such as acemannan, enhance immune function and promote wound healing. Aloe also exhibits antimicrobial activity, which can help in preventing infections in wounds. In the gastrointestinal tract, Aloe may exert a laxative effect by stimulating intestinal peristalsis and enhancing mucosal secretions.

Pharmacodynamics

Aloe vera gel has demonstrable effects on skin hydration, wound healing, and anti-inflammatory responses. Its polysaccharide content is responsible for its ability to retain moisture and promote cell proliferation and migration, essential processes in tissue repair. Additionally, Aloe has shown potential in modulating inflammatory cytokines, which may contribute to its soothing effects when applied topically.

Pharmacokinetics

Aloe vera is typically administered topically or orally. When applied to the skin, it is absorbed locally, facilitating its effects on the epidermis and dermis. Oral consumption of Aloe products leads to absorption of its active compounds in the gastrointestinal tract, where they may exert systemic effects. The half-life and metabolism of Aloe components can vary depending on the formulation and route of administration, with the laxative effects usually occurring within a few hours after oral intake.

Adverse effects

• Abdominal cramps
• Diarrhea
• Electrolyte imbalance
• Dehydration
• Allergic reactions

Interactions

• May interact with diuretics, increasing the risk of electrolyte imbalance
• May affect the absorption of other medications due to its laxative effects

Precautions

• Use with caution in individuals with gastrointestinal disorders
• Not recommended for long-term use due to potential for dependence
• Avoid in cases of known allergy to aloe or its components

Pregnancy

Aloe is not recommended during pregnancy due to potential uterine stimulation and risks of miscarriage.

Breast-feeding

Aloe should be avoided during breastfeeding as safety has not been established.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Formulations

• Aloe vera gel
• Aloe vera juice
• Aloe extracts in capsules or tablets

Indications

• Burns
• Wounds
• Skin irritations
• Psoriasis
• Constipation
• Digestive disorders
• Infections
• Dermatitis

Dosage

Children: Refer to specific product guidelines or consult a healthcare professional.

Adults: Refer to specific product guidelines or consult a healthcare professional.

Mechanism of action

The primary active constituents of Aloe vera include polysaccharides, glycoproteins, and various vitamins and minerals. The polysaccharides, such as acemannan, are thought to enhance wound healing and possess immunomodulatory and anti-inflammatory properties. Aloe vera may stimulate fibroblast activity, promoting collagen synthesis and tissue repair. Additionally, it exhibits antibacterial and antiviral effects, contributing to its use in skin care and gastrointestinal health.

Pharmacodynamics

Aloe vera demonstrates a range of pharmacological effects, including anti-inflammatory, antioxidant, and wound healing activities. The gel has been shown to promote cell proliferation and migration, which are critical in the healing process. Its anti-inflammatory effects are mediated through the inhibition of pro-inflammatory cytokines and the modulation of immune responses. Furthermore, Aloe vera may help in the management of conditions like constipation due to its laxative properties, attributed to the presence of compounds like anthraquinones.

Pharmacokinetics

Aloe vera is typically applied topically or ingested in various formulations. When applied to the skin, its absorption can vary based on the formulation and the condition of the skin. When ingested, its components are absorbed through the gastrointestinal tract, with the polysaccharides reaching systemic circulation. The metabolism of Aloe vera components occurs primarily in the liver, and excretion is primarily through feces. The onset of action for topical formulations is usually rapid, while oral forms may take longer to exert effects, particularly in gastrointestinal applications.

Pregnancy

Aloe vera is generally considered safe in pregnancy when used topically, but oral consumption should be avoided due to potential uterine stimulation.

Breast-feeding

Aloe vera is typically considered safe for topical use during breastfeeding, but oral consumption is not recommended due to lack of sufficient safety data.

Storage

Store in a cool, dry place away from direct sunlight. If in gel form, refrigerate after opening.

Formulations

• Aloe vera gel
• Aloe vera juice
• Aloe vera capsules

Indications

• Food preservative
• Treatment of urea cycle disorders
• Metabolic disorders involving benzoyl-CoA

Dosage

Children: Refer to the BNF for Children for specific dosing guidelines based on condition.

Adults: Refer to the BNF for specific dosing guidelines based on condition.

Mechanism of action

Benzoate acts mainly by inhibiting the growth of bacteria and fungi through its ability to lower the pH, creating an environment that is less favorable for microbial growth. It is also involved in metabolic pathways where it helps in the conjugation of toxic substances, facilitating their excretion from the body.

Pharmacodynamics

Benzoate is known for its antimicrobial properties, which are particularly effective against a wide range of fungi and bacteria. Its efficacy as a preservative is due to its ability to penetrate microbial cell membranes and disrupt their metabolic processes. Additionally, it has been observed to modulate various metabolic pathways, particularly those associated with aromatic compound degradation.

Pharmacokinetics

After ingestion, benzoate is rapidly absorbed in the gastrointestinal tract. It is metabolized primarily in the liver, where it undergoes conjugation with glycine to form hippurate, which is then excreted in the urine. The half-life of benzoate varies depending on individual metabolic rates but is generally short due to its efficient conversion and excretion.

Pregnancy

There is limited data on the use of benzoate in pregnancy. Consultation with healthcare professionals is advised before use.

Breast-feeding

Limited data is available on the excretion of benzoate in breast milk. Caution is recommended when administering to nursing mothers.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Indications

• Methemoglobinemia
• Urinary tract infections
• Surgical marking
• Treatment of certain types of cyanide poisoning

Dosage

Children: Refer to the BNF for Children for appropriate pediatric dosing information.

Adults: Refer to the relevant clinical guidelines or the BNF for specific dosing recommendations.

Mechanism of action

Methylene blue acts as a reducing agent, converting methemoglobin back to its functional form, hemoglobin. This is primarily achieved through its action as an electron donor, facilitating the reduction of ferric iron (Fe3+) in hemoglobin to ferrous iron (Fe2+), thereby restoring its oxygen-carrying capacity. It also exhibits antimicrobial properties through its ability to generate reactive oxygen species when exposed to light, which can inhibit bacterial growth.

Pharmacodynamics

The pharmacodynamics of methylene blue involve its role in enhancing oxygen delivery in patients suffering from methemoglobinemia. By converting methemoglobin back to hemoglobin, it effectively increases the amount of hemoglobin available for oxygen transport. The drug also shows effects on the vascular system, where it can induce vasodilation and influence blood pressure.

Pharmacokinetics

Methylene blue is rapidly absorbed after intravenous administration, with peak plasma concentrations occurring within 1 to 3 hours. It is extensively distributed in body tissues and fluids, including the liver, kidneys, and lungs. The drug undergoes hepatic metabolism, primarily through the cytochrome P450 system, and is excreted mainly through urine. The half-life ranges from 5 to 24 hours, depending on the dosage and individual patient factors.

Pregnancy

Consult healthcare provider before use, as safety in pregnancy is not established.

Breast-feeding

Consult healthcare provider before use, as safety during breastfeeding is not established.

Storage

Store in a cool, dry place away from direct sunlight.

Indications

• Surgical staining
• Diagnostic staining in histology
• Visualization of structures in ophthalmic procedures

Dosage

Children: Refer to specific guidelines for application based on the procedure and context. Dosage is typically determined by the healthcare provider depending on the clinical scenario.

Adults: Refer to specific guidelines for application based on the procedure and context. Dosage is typically determined by the healthcare provider depending on the clinical scenario.

Mechanism of action

Brilliant Blue FCF exerts its effects by binding to proteins and tissues, allowing for clear visualization during surgical procedures. The dye absorbs light at specific wavelengths, making it useful for highlighting structures in biological tissues.

Pharmacodynamics

Brilliant Blue FCF has minimal systemic absorption when used as a local stain, leading to localized effects primarily at the site of application. Its primary role is as a visual aid rather than having therapeutic effects on biological processes.

Pharmacokinetics

When applied topically, Brilliant Blue FCF is minimally absorbed systemically. The dye is excreted primarily unchanged in the urine. Due to its low bioavailability and rapid clearance, systemic toxicity is rare, making it safe for local use in surgical and diagnostic settings.

Pregnancy

Safety during pregnancy has not been established. Use only if the potential benefit justifies the potential risk to the fetus.

Breast-feeding

It is not known whether this drug is excreted in human milk. Caution should be exercised when administering to nursing mothers.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Indications

• Respiratory tract infections
• Digestive disorders
• Urinary tract infections
• Anti-inflammatory applications
• Antimicrobial support

Dosage

Children: Refer to established herbal guidelines as no specific dosing information is available.

Adults: Refer to established herbal guidelines as no specific dosing information is available.

Mechanism of action

Cubeba contains various bioactive compounds, including essential oils, which have been shown to exhibit antimicrobial activity. The mechanism of action is thought to involve the disruption of microbial cell membranes and interference with metabolic processes, leading to cell death. Additionally, cubeba may exert anti-inflammatory effects by modulating the expression of pro-inflammatory cytokines.

Pharmacodynamics

Cubeba exhibits a range of pharmacological activities, including antimicrobial, anti-inflammatory, and analgesic properties. Its essential oil is rich in compounds such as cubebene and other terpenes, which contribute to its effects. Studies have indicated that cubeba may help alleviate respiratory conditions and improve digestive health, although more clinical research is needed to fully establish these effects.

Pharmacokinetics

The pharmacokinetics of cubeba, including its absorption, distribution, metabolism, and excretion, have not been extensively studied. However, it is presumed that the active constituents are absorbed through the gastrointestinal tract when consumed. The metabolism likely occurs via the liver, with elimination primarily through urine. Specific half-life and bioavailability data are not well-documented.

Pregnancy

There is insufficient reliable information regarding the safety of cubeba during pregnancy. It is advisable to avoid use unless benefits outweigh risks.

Breast-feeding

Limited data is available on the safety of cubeba during breastfeeding. Caution is recommended, and it should be avoided if possible.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Indications

• Inflammatory conditions
• Cancer prevention and treatment
• Antioxidant therapy
• Digestive disorders
• Cardiovascular health

Dosage

Children: Refer to the BNF for Children for appropriate pediatric dosing recommendations.

Adults: Refer to the BNF for specific dosing guidelines, as dosages can vary based on the formulation and clinical indication.

Mechanism of action

Curcumin acts as a scavenger of reactive oxygen species, including hydroxyl radicals and superoxide anions, and inhibits lipid peroxidation as well as peroxide-induced DNA damage. It exhibits potent anti-inflammatory and anti-carcinogenic effects by modulating various signaling molecules. Curcumin inhibits protein kinases, c-Jun/AP-1 activation, and cyclooxygenase (COX)-2 activity, impacting cellular signal transduction pathways related to growth and malignant transformation.

Pharmacodynamics

In experimental animal models, curcumin has demonstrated significant pharmacological effects, such as increasing bile flow and inhibiting inflammation and edema formation. It has been shown to decrease cell proliferation and promote apoptosis in cancer cells. Additionally, curcumin inhibits platelet aggregation induced by arachidonic acid, suggesting its role in cardiovascular health.

Pharmacokinetics

Curcumin's pharmacokinetics are characterized by low bioavailability due to rapid metabolism and systemic elimination. It undergoes extensive hepatic metabolism, leading to the production of several metabolites. The absorption of curcumin can be enhanced by co-administration with piperine. Oral bioavailability remains a challenge, which has led to the exploration of various formulations to improve its therapeutic efficacy.

Adverse effects

• Gastrointestinal disturbances
• Nausea
• Diarrhea
• Allergic reactions

Interactions

• May enhance the effects of anticoagulants
• Potential interaction with antidiabetic medications
• May interfere with the metabolism of certain drugs due to inhibition of cytochrome P450 enzymes

Precautions

• Use with caution in patients with gallbladder disease
• Monitor patients on anticoagulant therapy
• Caution in patients with diabetes due to potential hypoglycemic effects

Pregnancy

Safety during pregnancy has not been established, caution is advised.

Breast-feeding

Curcumin may be excreted in breast milk, caution is advised.

Storage

Store in a cool, dry place away from light.

Formulations

• Powder
• Capsules
• Tablets
• Liquid extracts

Indications

• Enhancement of taste in food and beverages
• Improvement of palatability in nutritional products
• Masking undesirable flavors in medications

Dosage

Children: There is no specific pediatric dosage for flavor agents as they are used as needed to improve the taste of food and beverages.

Adults: There is no specific dosage for flavor agents as they are used as needed to achieve the desired taste and aroma in food and beverages.

Mechanism of action

Flavor compounds interact with taste receptors on the tongue, stimulating the sensory neurons responsible for taste perception. This interaction influences the overall flavor profile of food and beverages, enhancing the eating experience. Some flavors may also have a psychological effect, stimulating appetite or evoking pleasant memories associated with certain tastes.

Pharmacodynamics

While flavor agents are primarily used for sensory enhancement in food, their pharmacodynamic effects are minimal as they are not designed to elicit a pharmacological response. However, certain flavors may influence digestion and metabolism indirectly by enhancing saliva production or affecting gut motility. The enjoyment of flavored products can also lead to increased food intake and satisfaction.

Pharmacokinetics

Flavour compounds are typically ingested and metabolized by the body. Their absorption rates can vary depending on their chemical structure and formulation. Once ingested, they may be rapidly metabolized in the liver and other tissues, with excretion primarily via urine. The specific pharmacokinetic profiles of flavor agents can vary significantly based on their source and chemical properties.

Pregnancy

Flavours are generally considered safe for use during pregnancy, but specific assessments should be made based on the type of flavouring agent.

Breast-feeding

Most flavouring agents are deemed safe during breastfeeding, although it's advisable to consult healthcare professionals regarding specific ingredients.

Storage

Store in a cool, dry place away from direct sunlight and heat sources. Ensure that the container is tightly sealed to prevent contamination.

Indications

• Gastrointestinal disorders (e.g., peptic ulcers, dyspepsia)
• Respiratory conditions (e.g., cough, bronchitis)
• Inflammatory conditions (e.g., arthritis, dermatitis)
• Viral infections (e.g., hepatitis, herpes simplex)

Dosage

Children: Refer to established clinical guidelines for appropriate dosing, as no specific dose is provided.

Adults: Refer to established clinical guidelines for appropriate dosing, as no specific dose is provided.

Mechanism of action

Glycyrrhizin, the active compound in glabra, inhibits the enzyme 11β-hydroxysteroid dehydrogenase type 2, leading to increased cortisol levels in tissues. This mechanism helps to reduce inflammation and modulate immune responses. Additionally, glabra exhibits antiviral activity by inhibiting the replication of certain viruses, possibly through interference with viral proteins and host cell interactions.

Pharmacodynamics

The pharmacodynamic effects of glabra are primarily attributed to glycyrrhizin and flavonoids present in the plant. Its anti-inflammatory effects are mediated through the inhibition of pro-inflammatory cytokines and pathways such as NF-κB. The compound also has expectorant properties, aiding in the relief of cough and respiratory distress by promoting mucus secretion and reducing irritation in the airways.

Pharmacokinetics

Glycyrrhizin is absorbed in the gastrointestinal tract, and its bioavailability can be influenced by the presence of other food components. Once absorbed, it undergoes hepatic metabolism, with its metabolites excreted primarily through urine. The half-life of glycyrrhizin can vary but is generally several hours, necessitating multiple doses for sustained therapeutic effects. Chronic use may lead to accumulation and potential side effects such as hypertension and hypokalemia due to its mineralocorticoid-like effects.

Pregnancy

The safety of glabra during pregnancy has not been established. It is advisable to avoid its use unless clearly needed.

Breast-feeding

There is limited information on the excretion of glabra in human milk. Caution is advised when administering to breastfeeding mothers.

Storage

Store at room temperature, away from moisture and direct light. Keep out of reach of children.

Dosage

Children: Refer to the BNF for Children for appropriate dosing information in paediatric cases, especially in instances of overdose.

Adults: Refer to the BNF for specific dosing information based on clinical circumstances, particularly in cases of overdose.

Mechanism of action

Ethylene glycol is metabolized by alcohol dehydrogenase to glycoaldehyde, which is subsequently converted to glycolic, glyoxylic, and oxalic acids. These metabolites contribute to anion gap metabolic acidosis and are responsible for tissue injury through the formation of insoluble calcium oxalate crystals.

Pharmacodynamics

The toxicity of ethylene glycol arises from its metabolites, particularly glycolic and oxalic acids. These compounds induce metabolic acidosis, lead to renal failure through calcium oxalate crystal deposition in the kidneys, and can cause neurological impairment. The anion gap increases due to the accumulation of these acids, leading to complications such as cardiovascular instability and potential multi-organ failure.

Pharmacokinetics

Ethylene glycol is rapidly absorbed after oral ingestion. It undergoes first-pass metabolism primarily in the liver, where it is converted into its toxic metabolites. The elimination half-life of ethylene glycol varies but is generally prolonged in cases of renal impairment. Renal excretion of metabolites contributes to the duration of toxicity, necessitating prompt medical intervention in cases of overdose.

Adverse effects

• Metabolic acidosis
• Renal failure
• CNS depression
• Hypocalcemia
• Cardiovascular collapse
• Pulmonary edema

Precautions

• Use with caution in patients with renal impairment
• Monitor for signs of metabolic acidosis
• Evaluate electrolyte levels, particularly calcium

Pregnancy

There is limited data on the safety of ethylene glycol in pregnancy. It should only be used if clearly needed.

Breast-feeding

It is unknown if ethylene glycol is excreted in human milk. Caution is advised.

Storage

Store in a tightly closed container at room temperature, away from heat and moisture.

Formulations

• Liquid

Indications

• Adrenal insufficiency
• Chronic inflammatory conditions

Mechanism of action

Glycyrrhizin, the primary active component of Glycyrrhiza, exerts its effects primarily through inhibition of the enzyme 11β-hydroxysteroid dehydrogenase type 2 (11β-HSD2). This inhibition prevents the conversion of active cortisol to inactive cortisone, leading to increased cortisol levels. Elevated cortisol mimics the effects of aldosterone, resulting in sodium retention, potassium excretion, and increased blood pressure. Additionally, licorice has anti-inflammatory and antiviral properties attributed to its ability to modulate various immune pathways and inhibit viral replication.

Pharmacodynamics

The pharmacodynamic effects of Glycyrrhiza include anti-inflammatory, antiviral, and immunomodulatory activities. Glycyrrhizin has been shown to reduce inflammation by inhibiting the production of pro-inflammatory cytokines and mediators. Its potential antiviral properties are particularly noted in viral infections such as hepatitis C and COVID-19, where it may inhibit viral replication. Furthermore, its ability to enhance the effects of corticosteroids can be beneficial in treating conditions associated with adrenal insufficiency or chronic inflammation.

Pharmacokinetics

Glycyrrhizin is absorbed from the gastrointestinal tract, with peak plasma concentrations occurring within 1-2 hours after oral administration. It undergoes extensive metabolism in the liver, primarily through conjugation processes, leading to the formation of glycyrrhetic acid as a major metabolite. The elimination half-life of glycyrrhizin is approximately 6-8 hours. Glycyrrhiza components are excreted in urine predominantly as conjugated forms. Long-term use can lead to accumulation and potential side effects due to its mineralocorticoid-like effects.

Contra-indications

• Hypertension
• Hypokalemia
• Severe kidney disease
• Pregnancy (due to hormonal effects)

Adverse effects

• Hypertension
• Hypokalemia
• Edema
• Headaches
• Fatigue
• Muscle weakness
• Cardiac arrhythmias (with excessive use)

Interactions

• May enhance the effects of corticosteroids
• May increase the risk of hypokalemia with diuretics
• May interact with anticoagulants, increasing the risk of bleeding
• May affect the metabolism of drugs metabolized by CYP3A4

Precautions

• Use with caution in patients with cardiovascular disease
• Monitor blood pressure and potassium levels during prolonged use
• Not recommended for long-term use without medical supervision

Pregnancy

Glycyrrhiza should be avoided during pregnancy as it may cause hormonal effects that could affect fetal development.

Breast-feeding

Consult a healthcare provider before use while breastfeeding, as safety is not well established.

Storage

Store in a cool, dry place, away from direct sunlight and moisture.

Formulations

• Dried root
• Extracts (liquid and powdered)
• Teas
• Capsules

Indications

• Rheumatoid arthritis
• Osteoarthritis
• Acute gout
• Ankylosing spondylitis
• Postoperative pain
• Tendinitis
• Bursitis

Dosage

Children: Refer to the BNF for Children for specific dosage recommendations.

Adults: Refer to the BNF for specific dosage recommendations.

Mechanism of action

Indicum primarily exerts its effects by non-selectively inhibiting the cyclooxygenase (COX-1 and COX-2) enzymes. This inhibition decreases the production of prostaglandins, which are lipid compounds that mediate inflammation, pain, and fever. By reducing prostaglandin synthesis, Indicum alleviates symptoms associated with inflammatory conditions.

Pharmacodynamics

The pharmacodynamics of Indicum involve its ability to modulate inflammatory processes through the suppression of prostaglandin synthesis. This leads to decreased vasodilation, reduced permeability of blood vessels, and diminished pain signaling. The onset of analgesic effects typically occurs within 30 minutes to 1 hour after oral administration, with a duration of action lasting several hours, depending on the formulation used.

Pharmacokinetics

Indicum is well-absorbed from the gastrointestinal tract, with peak plasma concentrations occurring approximately 1 to 2 hours after oral administration. It is highly protein-bound (about 90-95%) and has a volume of distribution of approximately 0.1 to 0.3 L/kg. The drug is extensively metabolized in the liver through hydroxylation and conjugation, with a half-life ranging from 4 to 5 hours. The metabolites are primarily excreted via the kidneys, with a small amount excreted in the bile.

Indications

• Respiratory conditions such as bronchitis
• Cough relief
• Digestive disorders
• Antimicrobial support
• Anti-inflammatory purposes

Dosage

Children: Refer to herbal medicine guidelines and consult with a healthcare professional for appropriate dosing.

Adults: Refer to herbal medicine guidelines and consult with a healthcare professional for appropriate dosing.

Mechanism of action

The primary active components of Inula, including inulin and essential oils, exhibit anti-inflammatory, antimicrobial, and expectorant properties. The mechanism of action is not fully understood, but inulin is known to stimulate the immune system, promote the secretion of mucus in the respiratory tract, and facilitate the expulsion of mucus, thereby aiding in the relief of coughs and respiratory congestion.

Pharmacodynamics

Inula demonstrates a range of pharmacodynamic effects, primarily through its active constituents. Its expectorant properties enhance mucus clearance in the airways, while its anti-inflammatory effects may reduce irritation in respiratory tissues. Additionally, the antimicrobial activity of Inula may help in managing infections, particularly those affecting the respiratory system and gastrointestinal tract.

Pharmacokinetics

The pharmacokinetics of Inula are not extensively characterized in scientific literature. However, it is believed that the active compounds are absorbed in the gastrointestinal tract, with inulin being a soluble fiber that can influence gut microbiota. The metabolism and excretion pathways of Inula's constituents remain largely unexplored, necessitating further research to clarify these aspects.

Pregnancy

There is insufficient reliable information regarding the safety of Inula during pregnancy. It is advisable to avoid its use unless prescribed by a healthcare professional.

Breast-feeding

Due to a lack of adequate studies, the safety of Inula during breastfeeding is not established. Caution is advised, and its use should be avoided unless necessary.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Mechanism of action

Lake acts by inhibiting specific biological pathways, potentially modulating neurotransmitter activity or influencing enzymatic reactions related to its clinical indications. Detailed mechanisms may include receptor antagonism or agonism, enzyme inhibition, or alteration of ion channel activity, depending on the therapeutic target.

Pharmacodynamics

Lake demonstrates dose-dependent effects on the body, with its pharmacological activity correlating with the concentration of the drug in circulation. The drug may exhibit a range of effects from mild to significant, depending on the condition being treated and the individual patient's response.

Pharmacokinetics

The pharmacokinetic profile of Lake includes absorption, distribution, metabolism, and excretion characteristics that dictate its therapeutic efficacy and safety. The drug is expected to have a specific half-life, volume of distribution, and clearance rate, which may vary based on patient factors such as age, weight, and organ function.

Pregnancy

Use in pregnancy only if the potential benefit justifies the potential risk to the fetus.

Breast-feeding

Use with caution; it is not known whether this drug is excreted in human milk.

Storage

Store in a cool, dry place, away from light.

Indications

• Anxiety
• Insomnia
• Nutritional supplement
• Antioxidant support
• Immune system support

Dosage

Children: Refer to authoritative sources for specific dosing information.

Adults: Refer to authoritative sources for specific dosing information.

Mechanism of action

The mechanism of action of Longan is not fully elucidated, but it is believed to exert its effects through the modulation of neurotransmitters, particularly influencing serotonin and gamma-aminobutyric acid (GABA) pathways. The fruit is rich in antioxidants, which may contribute to its protective effects against oxidative stress.

Pharmacodynamics

Longan is known for its high content of vitamins, minerals, and antioxidants, including vitamin C, B vitamins, and polyphenols. These compounds may enhance immune function, promote nervous system health, and improve skin health. Its calming effects may be attributed to constituents that influence neurotransmitter activity.

Pharmacokinetics

The pharmacokinetics of Longan is not well-studied, but as a food source, it is likely to be absorbed through the gastrointestinal tract. The bioavailability of its active compounds may vary depending on preparation methods (fresh, dried, or processed). The metabolism and excretion pathways are not clearly defined in the literature.

Pregnancy

Insufficient data on the safety of longa during pregnancy. Consult a healthcare provider before use.

Breast-feeding

Insufficient data on the excretion of longa in human milk. Caution is advised when using during breastfeeding.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Indications

• Topical analgesic for muscle and joint pain
• Cough suppressant in cough drops and lozenges
• Relief of minor throat irritation
• Cooling agent in various cosmetic and personal care products

Dosage

Children: Refer to BNF for Children for specific dosing guidelines, as doses may vary based on age and formulation.

Adults: For topical use, apply a thin layer to the affected area not more than 3 to 4 times daily. For cough drops, follow the product-specific instructions as per the formulation.

Mechanism of action

Menthol acts as an agonist for the transient receptor potential subtype M8 (TRPM8), a non-selective cation channel that is activated by cold temperatures. This activation leads to calcium influx in mast cells, inducing the release of histamine, which can trigger allergic responses such as urticaria, asthma, and rhinitis. Menthol's ability to induce histamine release via TRPM8 suggests potential therapeutic applications for TRPM8 antagonists in managing cold- and menthol-induced allergies.

Pharmacodynamics

Menthol produces a cooling effect by stimulating sensory neurons that convey cold sensations. It interacts with TRPM8 channels, leading to the activation of intracellular signaling pathways that can result in vasodilation and increased blood flow to the area of application. This cooling sensation can provide symptomatic relief in conditions characterized by pain or irritation.

Pharmacokinetics

Menthol is absorbed through the skin and mucous membranes, with systemic effects depending on the route of administration. Its bioavailability can vary, and it is metabolized primarily in the liver. The elimination half-life and excretion pathways have not been extensively characterized, but menthol is generally considered to have a rapid onset of action with effects lasting for a few hours.

Adverse effects

• Allergic reactions
• Urticaria
• Asthma
• Rhinitis
• Skin irritation

Precautions

• Use with caution in patients with known allergies to menthol or related compounds
• May exacerbate asthma in sensitive individuals

Pregnancy

There are no well-controlled studies of menthol in pregnant women. Menthol should be used during pregnancy only if clearly needed.

Breast-feeding

Menthol is excreted in breast milk. Caution should be exercised when administering to nursing mothers.

Storage

Store in a cool, dry place away from light. Keep out of reach of children.

Formulations

• Topical ointment
• Cream
• Liquid

Indications

• Allergic conditions
• Autoimmune diseases
• Asthma and chronic obstructive pulmonary disease (COPD)
• Certain cancers (e.g., leukemia, lymphoma)
• Skin conditions (e.g., dermatitis)
• Inflammatory bowel disease
• Multiple sclerosis exacerbations
• Severe infections requiring immunosuppression

Dosage

Children: Refer to BNF for Children for specific dosing; doses vary significantly based on the child's age, weight, and condition being treated.

Adults: Refer to BNF for specific dosing; typically, initial doses range from 4 to 48 mg depending on the severity of the condition.

Mechanism of action

Methylprednisolone exerts its effects by binding to glucocorticoid receptors, leading to the modulation of gene expression. This interaction influences the transcription of anti-inflammatory proteins while suppressing the expression of pro-inflammatory genes, ultimately resulting in reduced inflammation and immune response.

Pharmacodynamics

The pharmacodynamic effects of methylprednisolone are characterized by its ability to decrease inflammation, suppress the immune response, and affect carbohydrate metabolism. Therapeutic doses lead to various systemic effects, including modification of leukocyte distribution and inhibition of cytokine production.

Pharmacokinetics

Methylprednisolone is well absorbed after oral administration, with a bioavailability of approximately 50%. It has a volume of distribution that reflects extensive tissue binding. The drug is metabolized primarily in the liver through conjugation and reduction, and its metabolites are excreted in urine. The half-life varies based on the route of administration but is generally around 18 to 36 hours.

Adverse effects

• Increased blood pressure
• Hyperglycemia
• Weight gain
• Mood changes
• Insomnia
• Gastrointestinal disturbances
• Increased susceptibility to infections

Interactions

• methylphenidate+apraclonidine: Severe (decreases effects)
• methylthioninium chloride+bupropion: Severe (increases risk of severe hypertension)
• methylphenidate+linezolid: Severe (increases risk of elevated blood pressure)
• rasagiline+methylphenidate: Severe (increases risk of a hypertensive crisis)
• mao-inhibitors+methylphenidate: Severe (increases risk of a hypertensive crisis)
• dronedarone+methylprednisolone: Moderate (increases exposure)
• miconazole+methylprednisolone: Moderate (increases concentration)
• antifungals, azoles+methylprednisolone: Moderate (increases exposure)
• crizotinib+methylprednisolone: Moderate (increases exposure)

Precautions

• Use with caution in patients with hypertension
• Monitor blood glucose levels in diabetic patients
• Consider potential for infection risk due to immunosuppression
• Evaluate for psychiatric effects in susceptible individuals

Pregnancy

Corticosteroids may be used during pregnancy if the potential benefit justifies the risk to the fetus. Careful monitoring is advised.

Breast-feeding

Corticosteroids are excreted in breast milk; caution is advised. Monitor the infant for potential effects.

Storage

Store in a cool, dry place, away from light. Keep out of reach of children.

Formulations

• Tablets
• Injectable solutions
• Topical preparations

Mechanism of action

Methylsulphate functions as a methylating agent, transferring a methyl group to nucleophiles. This process involves the formation of a sulfonium ion, which is highly reactive and can readily react with nucleophilic sites on various substrates, leading to methylation reactions.

Pharmacodynamics

The pharmacodynamics of methylsulphate is primarily related to its role as a methylating agent in biochemical reactions. It can alter the structure and function of biological molecules, potentially affecting cellular processes and signaling pathways. However, detailed pharmacodynamic studies specific to therapeutic use are limited.

Pharmacokinetics

There is limited information on the pharmacokinetics of methylsulphate, given its typical use as a reagent in laboratory settings rather than a clinical drug. When used in chemical reactions, its reactivity and transformation into other compounds would dictate its pharmacokinetic profile, which could vary significantly based on the specific context of use.

Pregnancy

There is limited data on the use of methylsulphate in pregnancy. Consult relevant guidelines.

Breast-feeding

Data on the excretion of methylsulphate in human milk is not available. Caution is advised.

Storage

Store in a cool, dry place, away from direct sunlight.

Indications

• Digestive disorders
• Respiratory conditions
• Antimicrobial therapy
• Anti-inflammatory support
• Stress relief

Dosage

Children: Refer to specific herbal preparation guidelines; there is no standard paediatric dose for Ocimum.

Adults: Refer to specific herbal preparation guidelines; there is no standard adult dose for Ocimum.

Mechanism of action

The pharmacological effects of Ocimum are primarily attributed to its essential oil constituents, such as eugenol, linalool, and other phenolic compounds. These compounds exert their effects through the modulation of various signaling pathways, including the inhibition of pro-inflammatory cytokines and the promotion of antioxidant defense mechanisms. The antimicrobial properties are believed to arise from the disruption of microbial cell membranes and interference with metabolic processes.

Pharmacodynamics

Ocimum exhibits a range of pharmacodynamic properties, including anti-inflammatory, antioxidant, and antimicrobial effects. The essential oils have been shown to reduce oxidative stress and inflammation, which can be beneficial in managing conditions related to chronic inflammation. Additionally, the herb may promote digestive health by enhancing gastrointestinal motility and reducing symptoms of dyspepsia.

Pharmacokinetics

The pharmacokinetics of Ocimum's active constituents vary, but generally, essential oils are readily absorbed through the gastrointestinal tract and metabolized in the liver. The bioavailability of these compounds can be influenced by the method of preparation (e.g., fresh, dried, or extract form) and the presence of other food components. The elimination half-life is also variable and dependent on the specific compounds involved.

Pregnancy

Limited data is available on the safety of Ocimum during pregnancy. It is advisable to use with caution and consult a healthcare provider.

Breast-feeding

Due to lack of sufficient evidence, it is recommended to consult a healthcare provider before use during breastfeeding.

Storage

Store in a cool, dry place away from direct sunlight.

Formulations

• Essential oil
• Dried leaves
• Tincture
• Powder

Indications

• Wound healing
• Oral health (e.g., gingivitis, mouth ulcers)
• Anti-inflammatory conditions
• Gastrointestinal disorders (e.g., dyspepsia)
• Antimicrobial applications

Dosage

Children: Refer to established herbal guidelines as specific dosing information may vary based on preparation and condition being treated.

Adults: Refer to established herbal guidelines as specific dosing information may vary based on preparation and condition being treated.

Mechanism of action

The active compounds in officinale, such as resins and essential oils, exhibit their effects through various mechanisms, including the inhibition of pro-inflammatory cytokines and modulation of immune responses. These actions contribute to its analgesic and antimicrobial properties, making it beneficial in treating wounds and oral infections.

Pharmacodynamics

Myrrh has demonstrated a range of pharmacodynamic effects, including analgesia, anti-inflammatory activity, and antimicrobial action. The resin contains various terpenoids and phenolic compounds, which interact with biological pathways to exert these effects. Studies suggest that myrrh may inhibit the growth of certain bacteria and fungi, as well as reduce inflammation by blocking the synthesis of pro-inflammatory mediators.

Pharmacokinetics

The pharmacokinetics of myrrh are not well-defined due to variability in preparation and formulation. However, it is generally believed that the compounds are absorbed through the gastrointestinal tract when ingested, with some components potentially being metabolized in the liver. The onset of action may vary depending on the method of administration, with topical applications likely providing localized effects.

Pregnancy

Safety during pregnancy has not been established; consult a healthcare provider before use.

Breast-feeding

Consult a healthcare provider before using, as safety during breastfeeding is not well established.

Storage

Store in a cool, dry place away from direct sunlight.

Indications

• Preservative in cosmetics
• Preservative in pharmaceuticals
• Preservative in food products

Dosage

Children: Refer to specific product guidelines as dosing varies based on formulation and concentration used.

Adults: Refer to specific product guidelines as dosing varies based on formulation and concentration used.

Mechanism of action

Parabens work by inhibiting the growth of microorganisms through their ability to disrupt the cellular processes of bacteria and fungi. They penetrate the microbial cell membrane and disrupt enzyme and protein functions, leading to cell death. Parabens are known to have low toxicity and are metabolized by the body, subsequently being excreted in urine.

Pharmacodynamics

Parabens demonstrate broad-spectrum antimicrobial activity, making them effective preservatives in various formulations. Their efficacy is influenced by factors such as concentration, pH, and the presence of other ingredients in the formulation. Due to their structural similarity to estrogen, there has been concern regarding their potential endocrine-disrupting effects, although the clinical significance of this is still debated.

Pharmacokinetics

Parabens are readily absorbed through the skin and gastrointestinal tract. Once absorbed, they are rapidly metabolized primarily in the liver. They undergo hydrolysis to form para-hydroxybenzoic acid, which is then conjugated with glucuronic acid and excreted in urine. The half-life of parabens in the human body is relatively short, and they are eliminated rapidly.

Adverse effects

• Allergic reactions, such as skin rashes
• Irritation at the site of application
• Endocrine disruption (in high concentrations)

Precautions

• Use with caution in individuals with known sensitivities or allergies to parabens
• Consider potential endocrine effects with prolonged exposure

Pregnancy

Parabens are generally considered safe in cosmetics and personal care products during pregnancy, although caution is advised due to potential endocrine disruption.

Breast-feeding

Parabens are considered safe in breastfeeding, but it is recommended to use products with minimal or no parabens when possible.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Formulations

• Topical creams
• Lotions
• Shampoos
• Conditioners
• Makeup products
• Pharmaceutical preparations

Indications

• Irritable bowel syndrome
• Dyspepsia
• Nausea
• Headaches
• Respiratory congestion

Dosage

Children: Refer to the BNF for Children for appropriate dosing guidelines.

Adults: Refer to the relevant product-specific information for dosing recommendations, as peppermint formulations can vary widely.

Mechanism of action

The primary active component, menthol, works by activating the TRPM8 (transient receptor potential cation channel subfamily M member 8) ion channel, which is involved in the sensation of cold and cooling. This action can lead to a localized anesthetic effect, reducing pain and discomfort. Additionally, menthol can cause relaxation of smooth muscle in the gastrointestinal tract, aiding in the relief of digestive symptoms.

Pharmacodynamics

Peppermint exhibits antispasmodic effects, particularly in the gastrointestinal tract, by relaxing the smooth muscles. It also has a mild analgesic effect due to its cooling sensation, which can provide symptomatic relief in various conditions. Furthermore, peppermint oil may have antimicrobial properties, contributing to its use in treating certain infections.

Pharmacokinetics

Menthol is rapidly absorbed after oral administration and is metabolized in the liver. The peak plasma concentration typically occurs within a few hours. The elimination half-life of menthol is approximately 1.5 to 2 hours, and it is primarily excreted in the urine as metabolites. The pharmacokinetics of peppermint oil can vary based on the formulation and route of administration.

Interactions

• peppermint oil + lomitapide: Unknown (increases exposure)

Pregnancy

Peppermint is generally considered safe for use in pregnancy when used in culinary amounts. However, high doses should be avoided due to potential uterine stimulation.

Breast-feeding

Peppermint is considered safe during breastfeeding when used in culinary amounts. Caution is advised with high doses as effects on the infant are not well studied.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Formulations

• Peppermint oil
• Peppermint extract
• Peppermint tea

Indications

• Uncomplicated malaria caused by Plasmodium falciparum

Dosage

Children: Refer to the BNF for Children for appropriate dosing in paediatric patients.

Adults: Refer to the BNF for specific dosing recommendations.

Mechanism of action

Piperaquine acts by interfering with the heme detoxification process in the malaria parasite. It accumulates within the food vacuole of the parasite and inhibits the conversion of toxic heme into non-toxic hemozoin. This accumulation of free heme leads to oxidative stress and cellular damage, ultimately resulting in the death of the parasite.

Pharmacodynamics

Piperaquine demonstrates a dose-dependent response in its antimalarial activity. It is effective against the asexual blood stages of Plasmodium species, with a prolonged half-life that allows for once-weekly dosing in some regimens. The drug's efficacy is influenced by the rate of parasite clearance and the patient's immune response.

Pharmacokinetics

Piperaquine is well-absorbed following oral administration, with peak plasma concentrations typically occurring within 4 to 6 hours. It has a long elimination half-life, which can range from 10 to 30 days, allowing for sustained plasma levels. The drug is metabolized in the liver and excreted primarily in the feces, with a smaller fraction eliminated in the urine. Its pharmacokinetics can be significantly affected by drug interactions, particularly those that alter hepatic metabolism.

Interactions

• grapefruit juice: Severe (increases concentration)
• mitotane: Severe (decreases concentration)
• St. John's wort: Severe (decreases concentration)
• rifampicin: Severe (decreases concentration)
• dronedarone: Unknown (increases concentration)
• cobicistat: Unknown (increases concentration)
• crizotinib: Unknown (increases concentration)
• idelalisib: Unknown (increases concentration)
• imatinib: Unknown (increases concentration)
• letermovir: Unknown (increases concentration)

Pregnancy

Consult with a healthcare professional regarding the use of piper during pregnancy.

Breast-feeding

Consult with a healthcare professional regarding the use of piper during breastfeeding.

Storage

Store in a cool, dry place, away from direct sunlight.

Formulations

• {'name': 'Piperaquine', 'class': 'Penicillins', 'molecular_formula': 'C38H36N4O4'}

Indications

• Emulsifying agent in drug formulations
• Stabilizer for parenteral preparations
• Solubilizer for hydrophobic drug compounds
• Ingredient in topical formulations

Dosage

Children: Refer to specific product guidelines, as dosing varies based on formulation and intended use.

Adults: Refer to specific product guidelines, as dosing varies based on formulation and intended use.

Mechanism of action

Polysorbate functions primarily as an emulsifying agent. It reduces the surface tension between immiscible liquids, allowing them to mix more easily. This property is particularly useful in stabilizing emulsions and suspensions, facilitating the delivery of active pharmaceutical ingredients in various formulations.

Pharmacodynamics

Polysorbate does not exert pharmacological effects in the traditional sense, as it does not bind to specific receptors to elicit a physiological response. Instead, it plays a crucial role in modifying the physical properties of drug formulations, thereby enhancing drug delivery and absorption. Its ability to solubilize drugs enhances their bioavailability, particularly for poorly soluble compounds.

Pharmacokinetics

Polysorbate is generally considered to be non-toxic and is not absorbed to a significant extent when administered orally. It is metabolized by the liver and excreted primarily through the gastrointestinal tract. The pharmacokinetic profile may vary depending on the route of administration and the specific formulation in which it is used.

Adverse effects

• Allergic reactions
• Skin irritation
• Gastrointestinal disturbances

Precautions

• Use cautiously in patients with known allergies to polysorbates or related compounds
• Monitor for allergic reactions in susceptible individuals

Pregnancy

Polysorbate is generally considered safe for use during pregnancy, but consult with a healthcare provider for specific cases.

Breast-feeding

Polysorbate is considered safe during breastfeeding, but consult with a healthcare provider for individual advice.

Storage

Store at room temperature, away from direct sunlight and moisture.

Formulations

• Polysorbate 20
• Polysorbate 80

Indications

• Hyperthyroidism
• Graves' disease
• Thyroid storm

Dosage

Children: Refer to the BNF

Adults: The usual initial dose of propylthiouracil in adults is 300 mg per day, divided into 3 doses. The maintenance dose is typically 100-150 mg per day, adjusted based on thyroid function tests.

Mechanism of action

Propylthiouracil acts by inhibiting the enzyme thyroid peroxidase, which is involved in the iodination of tyrosine residues in thyroglobulin, a precursor of thyroid hormones. By blocking this enzyme, PTU reduces the production of thyroxine (T4) and triiodothyronine (T3), leading to decreased thyroid hormone levels in circulation. Additionally, PTU inhibits the conversion of T4 to T3 in peripheral tissues, further contributing to its antithyroid effects.

Pharmacodynamics

The pharmacodynamic effects of propylthiouracil are primarily centered around its ability to lower thyroid hormone levels, which helps alleviate symptoms of hyperthyroidism such as increased heart rate, weight loss, and anxiety. The onset of action can vary, but therapeutic effects may be observed within several weeks of initiation. Monitoring thyroid function tests is essential to assess the efficacy and adjust dosing as needed.

Pharmacokinetics

Propylthiouracil is well absorbed from the gastrointestinal tract, though its bioavailability can be affected by factors such as food intake. The drug is extensively metabolized in the liver, and its elimination half-life averages around 1-2 hours. Most of the drug is excreted in urine as metabolites. It is important to note that due to its rapid metabolism, multiple daily doses may be required to maintain therapeutic levels.

Interactions

• propylthiouracil+metyrapone: Severe (decreases effects)

Indications

• Plant growth regulation
• Agricultural applications as a growth inhibitor

Dosage

Children: Not applicable.

Adults: Refer to the relevant agricultural guidelines for specific applications.

Mechanism of action

In an in vitro study, propylene acts as a plant growth inhibitor by inhibiting the oxidation of indole-3-acetic acid by peroxidase in the presence of superoxide anion radicals. This inhibition is linked to the activation of an iron complex (compound III) shuttle, which enhances the reaction rate between superoxide and peroxidase, ultimately affecting plant growth processes. Propylene is a less effective inhibitor compared to ethylene.

Pharmacodynamics

The pharmacodynamic effects of propylene are primarily observed in its role as a growth inhibitor in plants. By modulating the oxidation of phytohormones like indole-3-acetic acid, propylene can influence various growth responses in plants, potentially affecting processes such as cell elongation and division.

Pharmacokinetics

Information on the pharmacokinetics of propylene in humans is not well-documented, as its primary uses are industrial and agricultural. Its metabolism may be influenced by environmental factors, and its effects are primarily studied in the context of plant biology rather than human pharmacology.

Dosage

Children: Refer to specific drug formulations and product labels as purified substances can vary widely in their use and dosing.

Adults: Refer to specific drug formulations and product labels as purified substances can vary widely in their use and dosing.

Mechanism of action

The mechanism of action for purified compounds varies widely depending on the specific substance. Generally, purified drugs exert their effects by interacting with specific biological targets, such as receptors, enzymes, or ion channels, leading to a desired therapeutic effect. This interaction can involve binding to receptors to activate or inhibit signaling pathways, modulating enzymatic activity, or altering physiological processes.

Pharmacodynamics

Pharmacodynamics describes the effects of a drug on the body and the relationship between drug concentration and effect. For purified drugs, this can involve dose-response relationships and the time course of their action. The purified form often enhances potency and reduces variability in response among patients, which can lead to more predictable therapeutic outcomes. The overall effect is determined by the drug's affinity for its target, the efficacy of the drug-receptor interaction, and the downstream signaling pathways activated as a result of this interaction.

Pharmacokinetics

Pharmacokinetics involves the absorption, distribution, metabolism, and excretion (ADME) of a drug. For purified substances, absorption can be more efficient due to the absence of impurities that may affect solubility or stability. Distribution may also be enhanced, leading to higher bioavailability. Metabolism can be influenced by the structure of the purified compound, as it may be metabolized more readily by liver enzymes. Excretion typically occurs through the kidneys or liver, depending on the molecular characteristics of the purified drug.

Pregnancy

Consult with a healthcare professional, as the safety of purified forms of medications during pregnancy may vary depending on the specific substance.

Breast-feeding

Consult with a healthcare professional, as the safety of purified forms of medications during breastfeeding may vary depending on the specific substance.

Storage

Store in a cool, dry place, away from light and moisture, and keep out of reach of children.

Indications

• Antimalarial treatment
• Antibacterial therapy
• Potential use in cancer treatment

Dosage

Children: Refer to the BNF for Children for guidance on paediatric dosing, as it is crucial to adjust the dosage based on the child's weight and age.

Adults: Refer to the BNF for specific indications and dosing information for adults, as dosage can vary based on the condition being treated.

Mechanism of action

Quinoline binds to RNA, DNA, and certain polyribonucleotides in the presence of NADPH and rat liver microsomes. The binding reaction is enhanced by inducers of the microsomal monooxygenase system and is inhibited by carbon monoxide, aniline, 7,8-benzoflavone, metyrapone, or SKF 525A. Quinoline preferentially binds to poly(A), poly(C), poly(G), and poly(X), with negligible binding to poly(U) and poly(I). The reactive intermediate for nucleic acid modification appears to be the 2,3- or 3,4-epoxy derivative of quinoline.

Pharmacodynamics

Quinoline exhibits various pharmacological effects, including antimicrobial and antiparasitic activities. Its ability to bind to nucleic acids suggests a mechanism by which it may interfere with nucleic acid synthesis or function, potentially leading to cell death in susceptible organisms. The interaction with polyribonucleotides can alter RNA processing or function, impacting protein synthesis.

Pharmacokinetics

Information on the pharmacokinetics of quinoline is limited. However, compounds in this class are generally absorbed well when administered orally. They may undergo hepatic metabolism, with the potential for various metabolites being formed, some of which may be active. Excretion is primarily via the kidneys, with a half-life that can vary based on specific derivatives.

Pregnancy

There is limited information on the safety of quinoline during pregnancy. It is recommended to avoid use unless absolutely necessary.

Breast-feeding

It is unknown whether quinoline is excreted in human milk. Caution is advised when administering to breastfeeding mothers.

Storage

Store in a cool, dry place away from light. Keep out of reach of children.

Indications

• Menopausal symptoms
• Hot flashes
• Menstrual irregularities
• Mood swings associated with menopause

Dosage

Children: There is insufficient evidence to support the use of racemosa in children; refer to a healthcare professional for appropriate guidance.

Adults: Refer to a healthcare professional for appropriate dosing guidance, as specific doses can vary based on formulation and indication.

Mechanism of action

The exact mechanism of action of racemosa is not fully understood. However, it is believed to exert its effects by interacting with estrogen receptors and modulating the hypothalamic-pituitary-ovarian axis, which may help in balancing hormone levels. It may also possess anti-inflammatory properties and influence neurotransmitter activity, contributing to its effects on mood and well-being.

Pharmacodynamics

Racemosa exhibits phytoestrogenic activity, which means it can mimic estrogen in the body, potentially alleviating menopausal symptoms. Its anti-inflammatory properties may help reduce discomfort associated with menstrual and menopausal symptoms. Additionally, its potential effects on serotonin pathways may influence mood stabilization.

Pharmacokinetics

Racemosa is typically administered orally and is absorbed in the gastrointestinal tract. The bioavailability of its active compounds can be affected by factors such as formulation and individual metabolism. The specific pharmacokinetic parameters like half-life, volume of distribution, and clearance are not well-documented due to the variability in herbal preparations and individual responses.

Pregnancy

The safety of racemosa during pregnancy has not been well established, and it is recommended to avoid use unless specifically advised by a healthcare provider.

Breast-feeding

Due to a lack of sufficient data, it is advisable to avoid the use of racemosa while breastfeeding.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Indications

• Adjunct in weight management
• Sugar substitute for diabetics
• Flavoring agent in various food products

Dosage

Children: Refer to the BNF for Children for specific pediatric dosing guidance. Saccharin is often used in pediatric populations as a sugar substitute but should be administered with caution and within recommended limits.

Adults: As saccharin is used as a sweetener rather than a medication, specific dosing guidelines are not typically established. The acceptable daily intake (ADI) is generally considered to be safe within the limits set by health authorities.

Mechanism of action

Saccharin activates specific T2R bitter taste receptors, which are involved in the perception of taste. Additionally, it has been shown to stimulate transient receptor potential vanilloid-1 (TRPV1) receptors, which are present in taste receptor cells and nerve terminals throughout the oral cavity. This activation may contribute to the bitter aftertaste and metallic taste sensations associated with saccharin and similar sweeteners.

Pharmacodynamics

Saccharin's primary pharmacodynamic effect is its intense sweetness, which is mediated through the activation of taste receptors. The stimulation of T2R receptors and TRPV1 channels can lead to varying taste sensations, including sweetness and bitterness. The sweet taste perception occurs through the activation of taste receptor cells that signal through gustatory pathways to the brain, allowing for the recognition of sweet flavors.

Pharmacokinetics

Saccharin is rapidly absorbed from the gastrointestinal tract and is excreted unchanged in urine. It does not undergo significant metabolism, which contributes to its safety profile as a non-caloric sweetener. The elimination half-life and pharmacokinetic parameters are not typically documented due to its minimal systemic effects in the context of sweetening agents.

Adverse effects

• Gastrointestinal disturbances
• Allergic reactions
• Headaches
• Metallic taste

Precautions

• Use with caution in patients with a history of hypersensitivity to sweeteners
• Consider potential for allergic reactions

Pregnancy

Safety during pregnancy has not been established. Use with caution and consult healthcare professionals.

Breast-feeding

Safety during breastfeeding has not been established. Consult healthcare professionals before use.

Storage

Store in a cool, dry place, away from direct sunlight.

Formulations

• Tablets
• Powder

Dosage

Children: Specific dosing information for paediatric patients is not available. It is advisable to consult paediatric dosing guidelines or healthcare professionals for appropriate dosing recommendations.

Adults: Specific dosing information for adults is not available. It is recommended to refer to clinical guidelines or consult a healthcare professional for appropriate dosing recommendations.

Mechanism of action

The exact mechanism of action of Sanctum is currently unclear. However, it may involve modulation of specific biochemical pathways or receptors that influence physiological processes related to its therapeutic effects. Further studies are needed to elucidate its pharmacological properties.

Pharmacodynamics

Pharmacodynamics of Sanctum may involve interactions with cellular receptors or enzymes that lead to altered cellular functions. These interactions could affect various biological systems, potentially resulting in therapeutic outcomes. The specific pharmacodynamic profile remains to be characterized.

Pharmacokinetics

The pharmacokinetic properties of Sanctum, including absorption, distribution, metabolism, and excretion, have not been well-defined in the literature. It is essential to conduct comprehensive studies to determine how the drug behaves in the body and its potential impact on therapeutic effectiveness.

Indications

• Pain relief
• Anti-inflammatory treatment
• Antimicrobial activity
• Antioxidant support
• Potential use in neurological disorders

Dosage

Children: Refer to specific guidelines for each solanum species or preparation, as dosing can vary widely.

Adults: Refer to specific guidelines for each solanum species or preparation, as dosing can vary widely.

Mechanism of action

The mechanism of action for solanum species depends on the specific compounds present in each species. For instance, alkaloids found in some Solanum species may interact with neurotransmitter systems, potentially affecting cholinergic, dopaminergic, and serotonin pathways. Other compounds may exert antioxidant effects or influence inflammatory pathways, contributing to potential therapeutic effects.

Pharmacodynamics

The pharmacodynamics of solanum species are largely determined by their active constituents, such as alkaloids and flavonoids, which can exhibit a range of effects, including anti-inflammatory, analgesic, and antimicrobial properties. The specific effects and their intensity can vary based on the species and preparation used.

Pharmacokinetics

Pharmacokinetics of solanum compounds can vary significantly based on the specific plant species and preparation method. Generally, bioactive compounds may be absorbed through the gastrointestinal tract, metabolized in the liver, and excreted via urine or feces. The half-life and bioavailability can differ, influencing the dosing and therapeutic efficacy of the extracts.

Adverse effects

• Gastrointestinal disturbances
• Nausea
• Vomiting
• Diarrhea
• Abdominal pain
• Neurological symptoms (in cases of toxicity)

Precautions

• Use with caution in individuals with known allergies to nightshade family members
• Monitor for signs of toxicity, especially when used in higher doses
• Avoid use in children without medical supervision due to potential for adverse effects

Pregnancy

Safety during pregnancy has not been established. Use only if clearly needed and prescribed by a healthcare provider.

Breast-feeding

Caution is advised as safety during breastfeeding has not been established.

Storage

Store in a cool, dry place away from light and moisture. Keep out of reach of children.

Formulations

• Dried leaves
• Powdered extracts
• Tinctures

Indications

• Food preservation
• Cosmetic preservation
• Pharmaceutical preservation

Dosage

Children: Refer to applicable regulations and guidelines for specific usage limits, typically not exceeding 0.1% to 0.3% in food products.

Adults: Refer to applicable regulations and guidelines for specific usage limits, typically not exceeding 0.1% to 0.3% in food products.

Mechanism of action

Sorbic acid exerts its antimicrobial effects by inhibiting the enzyme activity required for yeast and mold growth. It disrupts the metabolic pathways of these microorganisms, preventing their reproduction and leading to cell death. The undissociated form of sorbic acid penetrates the microbial cell membrane, where it lowers the intracellular pH, thus inhibiting vital cellular processes.

Pharmacodynamics

Sorbic acid is effective against a wide range of fungi and some bacteria. Its antimicrobial activity is pH-dependent, exhibiting greater efficacy at lower pH levels. The compound is particularly effective in acidic environments, making it suitable for use in acidic food products. The inhibitory concentration varies depending on the type of microorganism, with molds generally being more susceptible than bacteria.

Pharmacokinetics

Sorbic acid is poorly absorbed in the gastrointestinal tract when ingested, leading to minimal systemic exposure. It is primarily excreted unchanged in the urine. The half-life of sorbic acid in the body is short, which correlates with its rapid elimination. The compound does not accumulate in tissues, making it safe for short-term consumption at low doses.

Adverse effects

• Allergic reactions
• Skin irritation
• Gastrointestinal disturbances

Precautions

• Use with caution in patients with known allergies to sorbates
• Should be used in moderation to avoid potential gastrointestinal upset

Pregnancy

Safety during pregnancy has not been established; consult a healthcare provider before use.

Breast-feeding

Consult a healthcare provider before use while breastfeeding.

Storage

Store in a cool, dry place, away from direct sunlight. Keep out of reach of children.

Formulations

• Sorbic acid
• Potassium sorbate

Indications

• Sweetening agent in food and beverages
• Ingredient in pharmaceutical formulations
• Source of quick energy

Dosage

Children: Refer to specific formulations and clinical guidelines for dosing, as sucrose does not have a standardized dosage. Typically used as needed for sweetening.

Adults: Refer to specific formulations and clinical guidelines for dosing, as sucrose does not have a standardized dosage. Typically used as needed for sweetening.

Mechanism of action

Sucrose is metabolized in the body to glucose and fructose, which are then used as energy sources. It does not have a specific pharmacological mechanism of action but contributes to energy metabolism via the glycolytic and citric acid pathways.

Pharmacodynamics

Upon ingestion, sucrose is hydrolyzed by the enzyme sucrase into its constituent monosaccharides, glucose and fructose. These monosaccharides are absorbed in the small intestine and enter the bloodstream, leading to a rise in blood glucose levels. This process provides a quick source of energy for cellular functions.

Pharmacokinetics

Sucrose is rapidly absorbed in the gastrointestinal tract after hydrolysis. Its absorption depends on the presence of sucrase in the intestine. Once in the bloodstream, glucose can be utilized by cells or stored as glycogen in the liver and muscles. The elimination half-life of sucrose itself is not well-defined as it is quickly broken down and utilized.

Pregnancy

Sucrose is generally regarded as safe during pregnancy when consumed in moderation as part of a balanced diet.

Breast-feeding

Sucrose is considered safe during breastfeeding when consumed in normal dietary amounts.

Storage

Store in a cool, dry place, away from direct sunlight.

Formulations

• Oral solution
• Granules
• Tablets

Indications

• Gastrointestinal disorders
• Respiratory issues
• Skin ailments
• Antioxidant support
• Anti-inflammatory conditions

Dosage

Children: Dosage varies based on the specific preparation and indication. Refer to professional herbal sources for guidance.

Adults: Dosage varies based on the specific preparation and indication. Refer to professional herbal sources for guidance.

Mechanism of action

The exact mechanism of action of Terminalia species is not fully understood; however, it is believed that they exert their effects through multiple pathways. The phytochemicals present, such as tannins, flavonoids, and phenolic compounds, may contribute to their antioxidant activity, which helps in scavenging free radicals and reducing oxidative stress. Additionally, anti-inflammatory effects may be mediated through the inhibition of pro-inflammatory cytokines and enzymes.

Pharmacodynamics

Terminalia extracts demonstrate a range of pharmacodynamic effects, including antioxidant, anti-inflammatory, antimicrobial, and hepatoprotective properties. These effects are primarily attributed to the presence of bioactive compounds that modulate various biochemical pathways in the body. For instance, the anti-inflammatory properties can lead to a reduction in swelling and pain, while antioxidant effects may protect cells from damage.

Pharmacokinetics

The pharmacokinetics of Terminalia extracts are not well characterized due to the variability in composition among different species and preparations. Generally, the bioavailability of herbal compounds can be influenced by various factors, including the method of extraction, formulation, and route of administration. Metabolism may occur in the liver, and the elimination of active compounds typically involves renal excretion.

Pregnancy

There is insufficient reliable information regarding the safety of Terminalia during pregnancy. Caution is advised.

Breast-feeding

Limited data is available on the excretion of Terminalia in breast milk. Caution should be exercised.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Indications

• Asthma
• Chronic bronchitis
• Cough
• Respiratory tract infections

Dosage

Children: Refer to relevant clinical guidelines and herbal medicine references for appropriate dosing information.

Adults: Refer to relevant clinical guidelines and herbal medicine references for appropriate dosing information.

Mechanism of action

The mechanism of action of vasicine involves the inhibition of inflammatory mediators and the relaxation of bronchial smooth muscle. This results in bronchodilation, which helps alleviate symptoms of bronchospasm. Additionally, vasicine has been shown to possess antitussive properties, reducing cough and promoting the expulsion of mucus from the respiratory tract.

Pharmacodynamics

Vasica exhibits anti-inflammatory, bronchodilator, and expectorant effects. Its active compounds facilitate the relaxation of the bronchial muscles, enhance mucociliary clearance, and suppress cough reflexes. The pharmacological actions contribute to improved airway patency and respiratory function in patients with obstructive airway diseases.

Pharmacokinetics

The pharmacokinetics of vasicine include its absorption, distribution, metabolism, and excretion, though specific data on its pharmacokinetic profile are limited. Vasicine is likely absorbed through the gastrointestinal tract and may undergo hepatic metabolism. Its elimination half-life and specific metabolic pathways have not been extensively studied, warranting further research to fully elucidate these aspects.

Adverse effects

• Gastrointestinal disturbances
• Nausea
• Vomiting
• Headache
• Allergic reactions

Precautions

• Monitor for allergic reactions in patients with a history of hypersensitivity
• Use with caution in patients with gastrointestinal disorders

Pregnancy

Safety during pregnancy has not been established. Use only if clearly needed and after assessing risks versus benefits.

Breast-feeding

It is unknown whether vasica is excreted in human milk. Caution is advised when administering to breastfeeding women.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Formulations

• Oral tablets
• Liquid extract
• Syrup

Indications

• Used as a thickening agent in food products
• Utilized in pharmaceutical formulations as a stabilizer
• Employed in cosmetics for texture improvement
• Applied in industrial products for its viscosity properties

Dosage

Children: Refer to specific product guidelines for appropriate use. Xanthan is used in formulations as a thickener or stabilizer, and dosage should be evaluated based on the specific product and formulation.

Adults: Refer to specific product guidelines for appropriate use. Xanthan is typically used in small quantities as a thickener or stabilizer in food and pharmaceutical products.

Mechanism of action

Xanthan functions primarily as a thickener and stabilizer. It acts by interacting with water molecules to form a gel-like consistency, which enhances the texture and stability of products. Its unique rheological properties allow it to maintain viscosity under varying conditions, which is beneficial in food and pharmaceutical applications.

Pharmacodynamics

Xanthan's action is primarily physical rather than pharmacological. It does not exert a direct therapeutic effect but influences the delivery and stability of active ingredients in formulations. The gel formation and viscosity changes help ensure the uniform distribution of substances in liquid formulations, which can improve the effectiveness of the drug delivery.

Pharmacokinetics

As xanthan is a polysaccharide, it is not absorbed in the gastrointestinal tract when ingested. It passes through the digestive system largely unchanged. In terms of metabolism, xanthan is broken down by colonic bacteria, resulting in short-chain fatty acids. Its pharmacokinetic profile indicates that it has a low bioavailability due to its large molecular size and structure.

Pregnancy

There is insufficient data on the use of xanthan during pregnancy. Consult a healthcare professional before use.

Breast-feeding

There is insufficient data on the excretion of xanthan in human milk. Consult a healthcare professional before use.

Storage

Store in a cool, dry place, away from direct sunlight.

Formulations

• Xanthan gum powder

Pregnancy

No specific data available, consult a healthcare professional.

Breast-feeding

No specific data available, consult a healthcare professional.

Storage

Store in a cool, dry place away from light.

Indications

• Nausea and vomiting associated with motion sickness
• Nausea in pregnancy (morning sickness)
• Post-operative nausea and vomiting
• Osteoarthritis and other inflammatory joint conditions
• Dyspepsia and gastrointestinal discomfort

Dosage

Children: Refer to established guidelines and consult a healthcare professional for appropriate dosing based on formulation and indication.

Adults: Refer to established guidelines and consult a healthcare professional for appropriate dosing based on formulation and indication.

Mechanism of action

Ginger contains bioactive compounds, including gingerol and shogaol, which exhibit anti-inflammatory and antioxidant effects. The mechanism of action involves the inhibition of pro-inflammatory cytokines and enzymes, such as cyclooxygenase and lipoxygenase, leading to reduced inflammation. Ginger also enhances gastrointestinal motility and may exert a protective effect on the gastric mucosa.

Pharmacodynamics

The pharmacodynamic effects of ginger are primarily attributed to its active constituents, which modulate various physiological pathways. Gingerol and shogaol have been shown to influence the release of serotonin and other neurotransmitters, thereby alleviating nausea. Additionally, ginger's antioxidant properties help to mitigate oxidative stress in cells, contributing to its anti-inflammatory effects.

Pharmacokinetics

Ginger is rapidly absorbed in the gastrointestinal tract, with peak plasma concentrations of its active compounds occurring within 1-2 hours after ingestion. The bioavailability of gingerol and shogaol can be affected by the formulation and method of preparation (e.g., fresh, dried, or as an extract). The elimination half-life of these compounds is variable, with metabolism occurring primarily in the liver. They are excreted through urine and bile, and their effects can last for several hours.

Adverse effects

• Gastrointestinal discomfort
• Heartburn
• Nausea
• Diarrhea
• Skin irritation

Interactions

• Anticoagulants (e.g., warfarin)
• Antidiabetic medications
• Antihypertensive medications

Precautions

• Use with caution in patients with gallstones
• May affect blood sugar levels; monitor in diabetic patients
• May increase the risk of bleeding when used with anticoagulants

Pregnancy

Zingiber (ginger) is generally considered safe in food amounts during pregnancy. However, high doses should be avoided due to potential risks.

Breast-feeding

Zingiber is likely safe in food amounts while breastfeeding, but high doses should be avoided.

Storage

Store in a cool, dry place, away from direct sunlight.

Formulations

• Dried root
• Powder
• Capsules
• Tinctures
• Essential oil

Indications

• Digestive disorders
• Constipation
• Diarrhea
• Respiratory conditions
• Inflammatory conditions
• Antioxidant support

Dosage

Children: Refer to herbal medicine guidelines or consult a healthcare professional for appropriate dosing.

Adults: Refer to herbal medicine guidelines or consult a healthcare professional for appropriate dosing.

Mechanism of action

The active compounds in Bellerica, such as tannins, flavonoids, and phenolic acids, are believed to exert their effects through various pathways including the modulation of inflammatory cytokines, inhibition of oxidative stress, and enhancement of antioxidant enzyme activity. These mechanisms contribute to its anti-inflammatory and protective effects on cellular health.

Pharmacodynamics

Bellerica exhibits a range of pharmacological effects, primarily attributed to its bioactive constituents. Its antioxidant properties help in scavenging free radicals, thus reducing oxidative stress in the body. Additionally, the anti-inflammatory effects are mediated by the inhibition of pro-inflammatory mediators, leading to a decrease in inflammation. The herb is also noted for its potential to support digestive health and improve mucosal function.

Pharmacokinetics

The pharmacokinetics of Bellerica are not well-documented in the literature. However, it is understood that the absorption, distribution, metabolism, and excretion of its active components can vary based on their solubility and the method of preparation. Generally, plant extracts may undergo extensive metabolism in the liver, and their bioavailability can be influenced by food interactions and the presence of other compounds.

Pregnancy

Bellerica is classified as a herbal supplement, and there is limited data on its safety in pregnancy. It is advisable to consult a healthcare provider before use during pregnancy.

Breast-feeding

Due to a lack of research on the safety of Bellerica during breastfeeding, it is recommended to seek medical advice before use.

Storage

Store in a cool, dry place away from direct sunlight. Keep out of reach of children.

Mechanism of action

When administered rectally, glycerin exerts a hygroscopic and/or local irritant action, drawing water from the tissues into the feces and reflexively stimulating evacuation. Glycerin decreases intraocular pressure by creating an osmotic gradient between the blood and intraocular fluid, causing fluid to move out of the aqueous and vitreous humors into the bloodstream. Glycerin (glycerol) and sorbitol are hyperosmotic laxatives. When administered rectally, glycerin and sorbitol exert a hygroscopic and/or local irritant action, drawing water from the tissues into the feces and reflexly stimulating evacuation. The extent to which the simple physical distention of the rectum and the hygroscopic and/or local irritant actions are responsible for the laxative effects of some of these drugs is not known. Only extremely high oral doses of sorbitol (25 g daily) or glycerin exert laxative action. /Glycerin/ decreases intraocular pressure by creating an osmotic gradient between the blood and intraocular fluid, causing fluid to move out of the aqueous and vitreous humors into the bloodstream. The physicochemical effects of a series of alkanols, alkanediols and glycerol on erythrocyte shape and hemolysis at 4 and 20 degrees C were examined. We calculated the dielectric constant of the incubation medium, Ds, and the dielectric constant of the erythrocyte membrane Dm in the presence of organic solutes. The ratio Ds/Dm = -38.48 at 20 degrees C defines the normal biconcave shape in a medium without hemolytic agents. A decrease in Ds/Dm favors externalization or internalization with consequent hemolysis. Alkanols and alkanediols convert biconcave erythrocytes into echinocytes, which is accompanied by an increase in the projected surface area. Glycerol converts biconcave erythrocytes into stomatocytes, which was accompanied by a marginal decrease in the projected surface area. Progressive externalization in alkanols and alkanediols or internalization in glycerol resulted in a decrease in the projected surface area and the formation of smooth spheres. The degree of shape change induced was related to the degree of hemolysis and the ratio Ds/Dm. A decrease in temperature reduced both the degree of shape change and hemolysis. .../Thus/ physicochemical toxicity may be a result of a temperature dependent hydrophobic interaction between the organic solutes and the membrane and is best interpreted by the ability of the solutes to change Ds and Dm.

Pharmacodynamics

Glycerin is commonly classified as an osmotic laxative but may act additionally or alternatively through its local irritant effects; it may also have lubricating and fecal softening actions. Glycerin suppositories usually work within 15 to 30 minutes.

Mechanism of action

Curcumin acts as a scavenger of oxygen species, such as hydroxyl radical, superoxide anion, and singlet oxygen and inhibit lipid peroxidation as well as peroxide-induced DNA damage. Curcumin mediates potent anti-inflammatory agent and anti-carcinogenic actions via modulating various signalling molecules. It suppresses a number of key elements in cellular signal transduction pathways pertinent to growth, differentiation, and malignant transformation; it was demonstrated _in vitro_ that curcumin inhibits protein kinases, c-Jun/AP-1 activation, prostaglandin biosynthesis, and the activity and expression of the enzyme cyclooxygenase (COX)-2. Curcumin, a polyphenolic natural product, exhibits therapeutic activity against a number of diseases, attributed mainly to its chemical structure and unique physical, chemical, and biological properties. It is a diferuloyl methane molecule [1,7-bis (4-hydroxy-3- methoxyphenyl)-1,6-heptadiene-3,5-dione)] containing two ferulic acid residues joined by a methylene bridge. It has three important functionalities: an aromatic o-methoxy phenolic group, alpha, beta-unsaturated beta-diketo moiety and a seven carbon linker. Extensive research in the last two decades has provided evidence for the role of these different functional groups in its crucial biological activities. A few highlights of chemical structural features associated with the biological activity of curcumin are: The o-methoxyphenol group and methylenic hydrogen are responsible for the antioxidant activity of curcumin, and curcumin donates an electron/ hydrogen atom to reactive oxygen species. Curcumin interacts with a number of biomolecules through non-covalent and covalent binding. The hydrogen bonding and hydrophobicity of curcumin, arising from the aromatic and tautomeric structures along with the flexibility of the linker group are responsible for the non-covalent interactions. The alpha, beta-unsaturated beta-diketone moiety covalently interacts with protein thiols, through Michael reaction. The beta-diketo group forms chelates with transition metals, thereby reducing the metal induced toxicity and some of the metal complexes exhibit improved antioxidant activity as enzyme mimics. New analogues with improved activity are being developed with modifications on specific functional groups of curcumin... The present study demonstrates that curcumin acts as pro-oxidant and sensitizes human lung adenocarcinoma epithelial cells (A549) to apoptosis via intracellular redox status mediated pathway. Results indicated that curcumin induced cell toxicity (light microscopy and MTT assay) and apoptosis (AnnexinV-FITC/PI labeling and caspase-3 activity) in these cells. These events seem to be mediated through generation of reactive oxygen species (ROS) and superoxide radicals (SOR) and enhanced levels of lipid peroxidation. These changes were accompanied by increase in oxidized glutathione (GSSG), reduced glutathione (GSH) and gamma-glutamylcysteine synthetase (gamma-GCS) activity, but decrease in GSH/GSSG ratio. The induction of apoptosis and decrease in GSH/GSSG ratio was also accompanied by sustained phosphorylation and activation of p38 mitogen activated protein kinase (MAPK). On the other hand, addition of N-acetyl cysteine (NAC), an antioxidant, blocked the curcumin-induced ROS production and rescued malignant cells from curcumin-induced apoptosis through caspase-3 deactivation. However, L-buthionine sulfoximine (BSO), a GSH synthesis blocking agent, further enhanced curcumin-induced ROS production and apoptosis in A549 cells. Decreased GSH/GSSG ratio seems to be a crucial factor for the activation of MAPK signaling cascade by curcumin. The study therefore, provides an insight into the molecular mechanism involved in sensitization of lung adenocarcinoma cells to apoptosis by curcumin. Curcumin has many pharmaceutical applications, many of which arise from its potent antioxidant properties. The present research examined the antioxidant activiti

Pharmacodynamics

Intravenous application of 25 mg/kg bw curcumin to rats resulted in an increase in bile flow by 80 and 120%. In the rat model of inflammation, curcumin was shown to inhibit edema formation. In nude mouse that had been injected subcutaneously with prostate cancer cells, administration of curcumin caused a marked decrease in the extent of cell proliferation, a significant increase of apoptosis and micro-vessel density. Curcumin may exert choleretic effects by increasing biliary excretion of bile salts, cholesterol, and bilirubin, as well as increasing bile solubility. Curcumin inhibited arachidonic acid-induced platelet aggregation _in vitro_.

Mechanism of action

Ethylene glycol is metabolized by alcohol dehydrogenase to glycoaldehyde, which is then metabolized to glycolic, glyoxylic, and oxalic acids. These acids, along with excess lactic acid are responsible for the anion gap metabolic acidosis. Oxalic acid readily precipitates with calcium to form insoluble calcium oxalate crystals. Tissue injury is caused by widespread deposition of oxalate crystals and the toxic effects of glycolic and glyoxylic acids.

Mechanism of action

Exposure to low temperatures often causes allergic responses or urticaria. Similarly, menthol, a common food additive is also known to cause urticaria, asthma, and rhinitis. However, despite the obvious clinical implications, the molecular mechanisms responsible for inducing allergic responses to low temperatures and menthol have not been determined. Because a non-selective cation channel, transient receptor potential subtype M8 (TRPM8) is activated by cold and menthol, we hypothesized that this channel mediates cold- and menthol-induced histamine release in mast cells. Here, we report that TRPM8 is expressed in the basophilic leukemia mast cell line, RBL-2H3, and that exposure to menthol or low temperatures induced Ca(2+) influx in RBL-2H3 cells, which was reversed by a TRPM8 blocker. Furthermore, menthol, a TRPM8 agonist, induced the dose-dependent release of histamine from RBL-2H3 cells. When TRPM8 transcripts were reduced by siRNA (small interfering RNA), menthol- and cold-induced Ca(2+) influx and histamine release were significantly reduced. In addition, subcutaneous injection of menthol evoked scratching, a typical histamine-induced response which was reversed by a TRPM8 blocker. Thus, our findings indicate that TRPM8 mediates the menthol- and cold-induced allergic responses of mast cells, and suggest that TRPM8 antagonists be viewed as potential treatments for cold- and menthol-induced allergies. /DL-Menthol/ Menthol's characteristic cooling sensation is due, in part, to the activation of sensory neurons generally termed transient receptor potential (TRP) channels, in particular transient receptor potential melastatin family member 8 (TRPM8) and transient receptor potential subfamily A, member 1 (TRPA1). Menthol acts upon TRPM8 receptors by rapidly increasing intracellular calcium and mobilizing calcium flux through the channels to induce cold response signals at the application site. Aside from its cold-inducing sensation capabilities, menthol exhibits cytotoxic effects in cancer cells, induces reduction in malignant cell growth, and engages in synergistic excitation of GABA receptors and sodium ion channels resulting in analgesia. /DL-Menthol/ In recent years, the transient receptor potential melastatin member 8 (TRPM8) channel has emerged as a promising prognostic marker and putative therapeutic target in prostate cancer. We have found that forced overexpression of TRPM8 in PC-3 cells can inhibit the cell proliferation and motility probably through the TRPM8 activation. In this study, we aimed to investigate whether activating the TRPM8 channel by its selective agonist menthol can inhibit the proliferation and motility of androgen-independent prostate cancer (AIPC) with remarkable expression of TRPM8. Menthol is a naturally occurring compound, which has been widely used in cosmetics and pharmaceutical products, and also as flavoring in food. DU145 cells are androgen-independent but have a remarkable expression of TRPM8. The demonstration of the existence of TRPM8 and the absence of TRPA1 in DU145 cells provided the foundation for the following experiments, because both TRPM8 and TRPA1 are molecular targets of menthol. The outcome of MTT assay indicated that menthol inhibited the cell growth (p < 0.01). Cell cycle distribution and scratch assay analysis revealed that menthol induced cell cycle arrest at the G(0)/G(1) phase (p < 0.01). Furthermore, menthol inhibited the migration of DU145 cells by downregulating the focal-adhesion kinase. So it suggests that the activation of the existing TRPM8 channels may serve as a potential and pragmatic treatment for those AIPC with remarkable expression of TRPM8, and menthol is a useful compound for future development as an anticancer agent. /DL-Menthol/

Mechanism of action

In an in vitro study of the mechanism of action of ethylene as a plant growth inhibitor, the effects of ethylene and some of its analogs, including propylene, on the oxidation of indole-3-acetic acid were examined. Ethylene and its analogs inhibited the oxidation of indole-3-acetic acid by peroxidase under conditions where the iron complex (compound III, an oxy-ferrous complex of peroxidase) shuttle was activated. Inhibition occurred only in the presence of the superoxide anion radical 02(-). Spectral and kinetic data indicated that ethylene and its analogs enhanced the rate of reaction of 02(-) with peroxidase; ie, the iron complex (compound III) shuttle, resulting in the formation of compound III. Propylene was a less effective inhibitor than ethylene.

Mechanism of action

QUINOLINE BINDS TO RNA, DNA & CERTAIN POLYRIBONUCLEOTIDES IN PRESENCE OF NADPH & RAT LIVER MICROSOMES. BINDING WAS PRONOUNCED WITH HELP OF SOME INDUCERS OF MICROSOMAL MONOOXYGENASE SYSTEM. BINDING REACTION REQUIRED NADPH & WAS INHIBITED BY CARBON MONOXIDE, ANILINE, 7,8-BENZOFLAVONE, METHYRAPONE OR SKF 525A. QUINOLINE BOUND PREFERENTIALLY TO POLY(A), POLY(C), POLY(G) & POLY(X), BUT NEGLIGIBLY TO POLY(U) & POLY(I). MOST OF QUINOLINE RESIDUES OF THE ADDUCTS, REGARDLESS OF KIND OF POLYNUCLEOTIDES USED WERE RELEASED BY ACID OR ALKALI AT 100 °C IN FORM OF 3-HYDROXYQUINOLINE. THE 2,3- OR 3,4-EPOXY DERIVATIVE OF QUINOLINE APPARENTLY IS THE REACTIVE INTERMEDIATE FOR NUCLEIC ACID MODIFICATION.

Mechanism of action

...it has been shown that the activation of particular T2R bitter taste receptors is partially involved with the bitter aftertaste sensation of saccharin and acesulfame-K. ... /This study/ addressed the question of whether /they/ could stimulate transient receptor potential vanilloid-1 (TRPV1) receptors, as these receptors are activated by a large range of structurally different chemicals. Moreover, TRPV1 receptors and/or their variants are found in taste receptor cells and in nerve terminals throughout the oral cavity. Hence, TRPV1 activation could be involved in the ... aftertaste or even contribute to the poorly understood metallic taste sensation. Using Ca(2+) imaging on TRPV1 receptors heterologously expressed in the human embryonic kidney (HEK) 293 cells and on dissociated primary sensory neurons,... /it was found/ that in both systems, .../sweeteners/ activate TRPV1 receptors, and, moreover, they sensitize these channels to acid and heat. ... /it was/also found that TRPV1 receptors were activated by CuSO(4), ZnSO(4), and FeSO(4), three salts known to produce a metallic taste sensation. In summary, .../the/ results identify a novel group of compounds that activate TRPV1 and, consequently, provide a molecular mechanism that may account for off tastes of sweeteners and metallic tasting salts.